Pig Pickin' Cake (Pineapple)

1 box butter Duncan Hines cake mix
4 eggs
1/2 cup Crisco oil
1 can mandarin oranges (slightly chopped) juice and all

Add box of above cake mix. Bake at 350 degrees for approximately 20 to 25 minutes. Makes three layers

Icing Recipe
1 lb crushed pineapple
1 box dry vanilla instant pudding mix
1 9 oz container Cool Whip

Mix together and ice cooled cake